M4.9 Earthquake 111 km E of Ust’-Kamchatsk Staryy, Russia — July 23, 2020
2020-07-23 15:47:41 UTC (2020-07-23) · approx. 2:47 AM UTC+11 local
On July 23, 2020 at 15:47 UTC, a magnitude 4.9 shallow crustal earthquake struck 111 km E of Ust’-Kamchatsk Staryy, Russia, at a depth of 10.0 km and coordinates 56.2237°, 164.2750°.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Russia, a region characterized by the Kuril-Kamchatka subduction zone on the northwestern Pacific Ring of Fire. The nearest mapped fault system is the Kuril-Kamchatka Trench. View all earthquakes in Russia.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
164.2750°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Ust’-Kamchatsk Staryy, Russia?
The magnitude 4.9 earthquake that struck 111 km E of Ust’-Kamchatsk Staryy, Russia on July 23, 2020 at 15:47 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 56.2237°, 164.2750°, which is 111 km E of Ust’-Kamchatsk Staryy, Russia. View all earthquakes in Russia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
Has Russia had earthquakes this big before?
The largest recorded earthquake in Russia was the M9.0 Kamchatka earthquake of November 4, 1952. Today's magnitude 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000b2r6). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 23, 2020). M4.9 Earthquake 111 km E of Ust’-Kamchatsk Staryy, Russia — July 23, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000b2r6/